One of the most important, yet overlooked component of your PC is the Hard disk.
Here's where all your precious memories, softwares, games, documents and lots more reside!
Cooling the hard disk will not only Significantly increase its life, but some performance too!

Commercial hard drive coolers are available, but they cost a bomb and are difficult to install.
Here,i'll teach you how to do that in under RS 100. (US dollars 2 ONLY)

Step 1: Get Some Fans

Get some fans.

I used 60mm fans from a local PC shop. They were about RS 40 each.

You can use any size Computer fans as long as they fit on the hard disk.

Step 2: Join 2 Fans

I decided to join and use 2 fans, and Wired them in Series.

This undervolted each fan at about 6V. This move made them so super slient that one would be hard pressed to hear them!

Of course, you can use a single fan and Run it straight off MOLEX 12v

There goes some glue and tape, and i've joined the fans side by side as to resemble a rectangle

Step 3:

Here's the fun part.

I took an pencil eraser, and guled it to the base of each fan.

These humble beings will serve as a rest for the fans, while also dampening the vibrations and improving spacing between the Hard disk and the fans!

Step 4: Enjoy!

Now simply glue or tape the fans atop the metal part of hard disk and power up!
(refer to your PC manual for installation of hard disk. This mod requires one empty drive bay above the disk to work)
Give yourself a pat on the back! you've just prolonged the life of your data significantly!

Enjoy lower temeratures. A drop of about 15.C approx is expected.

Have a nice day!